8. Arkansas> Average temperature in the summer: 78.7° F> Hottest area in the summer: Little Rock with avg. summer temp. of 81.5° F> Highest temperature recorded since 1980: 115.0° F in Fort Smith

Source: Thinkstock

9. South Carolina> Average temperature in the summer: 78.5° F> Hottest area in the summer: Charleston C.O. with avg. summer temp. of 80.9° F> Highest temperature recorded since 1980: 109.0° F in Columbia

Source: Thinkstock

10. Hawaii> Average temperature in the summer: 77.9° F> Hottest area in the summer: Honolulu with avg. summer temp. of 81.1° F> Highest temperature recorded since 1980: 97.0° F in Kahului